ABS CBN News
Summary
In much of the world, air conditioners are powered by fossil fuels, which emit greenhouse gases and make the planet hotter.
"It's a vicious loop. We cool the indoors, but we warm the outdoors, therefore generating the need for more cooling," said Sneha Sachar, Associate Director at Clean Cooling Collaborative, an initiative aimed at transforming the cooling sector.
To break out of this loop, scientists point to passive cooling strategies that control temperature using little to no energy.
Another approach is to cool entire districts with massive cooling units. Singapore has what it claims to be the largest underground district cooling facility in the world, which brings temperatures down in residential buildings, banks, malls and an iconic hotel. Water is chilled 25 meters below the ground before it is piped across a series of buildings.
District cooling can save up to 50% on energy and emissions compared to regular air conditioners, and cities such as Toronto, Paris and Hong Kong are now using them.
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